Gradle Task :bootRun fails: Error: Could not find or load main class

[eeriksp]

When running ./gradlew on Windows 10 using JHipster 6.0.0-beta.0 for a newly created project, the script fails:

> Task :bootRun FAILED
Error: Could not find or load main class ...

FAILURE: Build failed with an exception.

When looking at the bootRun task:

    bootRun {
        dependsOn classpathJar
        doFirst {
            classpath = files("$buildDir/classes/java/main", "$buildDir/resources/main", classpathJar.archivePath)
        }
    }

it seems that the Kotlin directory is not included. I tried to add "$buildDir/classes/kotlin/main" at the beginning of the classpath, but although the needed class is clearly there, it made no difference.

Note that ./gradlew bootJar produces a functional .jar file and running it with java -jar build/libs/appname-0.0.1-SNAPSHOT.jar works.

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[sendilkumarn]

and are you using Java 8 or any other version?

Is it because of Windows path issue?

[eeriksp]

Yes, I am using Java 8 in Windows. I am not sure what you mean by Windows path issue.

Note that ./gradlew bootJar produces a functional JAR file and running it with java -jar build/libs/appname-0.0.1-SNAPSHOT.jar works.

[pvliss]

@eeriksp I think you have hit the same issue as jhipster/generator-jhipster#9572. This has been fixed in JHipster 6.0.0 final release. Can you please try and remove the whole block stating with if (OperatingSystem.current().isWindows()) { and let us know if that works. See also here ) for reference.

NOTE: We should also remove the respective block from kotlin.gradle.ejs as well:

jhipster-kotlin/generators/server/templates/gradle/kotlin.gradle.ejs

Lines 68 to 73 in 7130b5e

	if (OperatingSystem.current().isWindows()) {
	bootRun {
	doFirst {
	classpath += files("$buildDir/classes/kotlin/main")
	}
	}

[eeriksp]

Thank you!
This solved the problem :)

[pvliss]

@eeriksp Glad it did and thanks for reporting back!!!